Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760703Ab3GaSfu (ORCPT ); Wed, 31 Jul 2013 14:35:50 -0400 Received: from iolanthe.rowland.org ([192.131.102.54]:37185 "HELO iolanthe.rowland.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1760249Ab3GaSfs (ORCPT ); Wed, 31 Jul 2013 14:35:48 -0400 Date: Wed, 31 Jul 2013 14:35:47 -0400 (EDT) From: Alan Stern X-X-Sender: stern@iolanthe.rowland.org To: Tuomas Tynkkynen cc: balbi@ti.com, , , , , , Matthieu CASTET , Alexander Shishkin Subject: Re: [PATCH 1/6] usb: host: add has_tdi_phy_lpm capability bit In-Reply-To: <1375292522-7855-2-git-send-email-ttynkkynen@nvidia.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1145 Lines: 25 On Wed, 31 Jul 2013, Tuomas Tynkkynen wrote: > The has_hostpc capability bit indicates that the host controller has the > HOSTPC register extensions, but at the same time enables clock disabling > power saving features with the PHY Low Power Clock Disable (PHCD) bit. > > However, some host controllers have the HOSTPC extensions but don't > support the low-power feature, so the PHCD bit must not be set on those > controllers. Add a separate capability bit for the low-power feature > instead, and change all existing users of has_hostpc to use this new > capability bit. > > The idea for this commit is taken from an old 2012 commit that never got > merged ("disociate chipidea PHY low power suspend control from hostpc") > > Inspired-by: Matthieu CASTET > Signed-off-by: Tuomas Tynkkynen Acked-by: Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/